Steam-engine



(No Model.) WELL.

STEAM ENGINE.

3 Sheets-Shet 1 No. 498,806. Patented June 6, 1893.

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I STEAM ENGINE. No. 498,806. Patented June 6, 1898.

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JAMES R. MAXTVELL, OF CINCINNATI, OHIO.

STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 498,806, dated June 6,1893. Application filed J 11116 29, 1892. Serial No. 438,482- (Nomodel.)

To all whom it may concern:

Be itknown that 1, JAMES R. MAXWELL,of Cincinnati, Hamilton county,Ohio, have invented certain new and useful Improvements inSteam-Engines, of which the following is a specification.

This invention pertains to improvements in the general construction ofsteam engines and the improvements will be readily understood from thefollowing description taken in connection with the accompanying drawingsin which Figure 1, is a side elevation of a steam engine exemplifying mypresent improvements in connection with a twin compound steam pumpingengine; Fig. 2, a vertical transverse section of the same in the planeof line a of other figures; Fig. 3, a plan of the engine parts of thefarther twin removed; Fig. 4, an end elevation at the steam end of theengine, being the left hand end of the figures previously referred to;Fig. 5, an end elevation at the beam the motion work of the farther twinbeing omitted; Fig. 6, a vertical transverse section of the beam-housingL of the nearer twin, taken in the plane of line b of other figures; andFig. 7, a vertical transverse section of the crank-housing of thefarther twin, taken in the plane ofline cof other figures.

I illustrate myimprovement in connection withtwo engines arranged astwins operating upon a single crankshaft. The literal description Willbe generally confined to that one of the twins nearest the spectator asthe machine appears in Figs. 1 and 2.

In the drawings, confining attention to Figs. 1 and 2, as far as practicable:-A, indicates the foundation: B,averticallydisposedcrankhousing consisting of a columnar box-like structure standing uponthe foundation: 0,

. a pillow-block formed in an upward extension from the innerportion ofthe top of the crankhousing: D, a crank-shaft jonrnaled in thispillow-block and finding its outboard bearing in the pillow-block of thesecond engine, in case the engines are arranged as twins, as in theexemplification: E, a fly-wheel on the crank-shaft, between the twobearings of the shaft: F, a horizontal steam cylinder secured againstone of the end faces of the crankhousing B, this cylinder, in theexemplificaend of the engine,

ing from the cylinder F through the crankhousing B and through thepump-barrel and outwardly beyond the pump-barrel: J, the pump plunger,faston this piston-rod: K, the piston of the cylinder F: L, abeam-housing, consisting of a low box-like structure resting upon thefoundation and secured to the end of the pump-barrel opposite thecrank-housing. M, a crosshead-guide formed in the beamhousingv Lparallel with and below the axisof the pump-barrel and some distanceoutward from the end of the pump-barrel: N, acrosshead secured to theouter end of the piston-rod H and arranged for reciprocation in theguide M: O, a pair of pillow-blocks formed in upward extensions of thebeam-housingL, one at each side of the piston-rod of the pump: P, abeamhaving centrally disposed trunnions carried by the pillow-blocks O, thebeam being disposed, when in central position,substantially vertically,the lower end of the beam being notched orgapped to permit of thepresence of the piston-rod H and the upper end being similarly gapped toreceive a connecting-rod between its two side Webs: Q, a pair of linksconnecting the lower end of the beam with the crosshead N, there being alink outside each side of the beam and crosshead and equi-distant fromthe axial line of the pumpbarrel: R, a connecting-rod connecting theupper end of the beam and the crank of the shaft B, this rod beingdisposed in the same vertical plane with the piston-rod H: b, a steamcylinder mounted abovethe low-press ure cylinder F and secured at itsforward end to a flange projecting upwardly from the crank-housing, thiscylinder, in the present case, being the high-pressure cylinder of thecompound engine: T, a crosshead-guide formed in the upper portion of thecrankhousing D: U, the piston-rodof the highpressure cylinder S: V, acrosshead on this piston-rod and arranged for reciprocation in the guideT: W, a pair of connecting-rods connecting the crosshead V with theupper end of the beam P, there being a rod at each A side outside thecrosshead and beam and equi-distantfrom the vertical plane of thepiston-rod H: X, suction-connection for the pump: Y, dischargeconnection for the pump: Z, (Fig. 3) the farther engine of the pair, inall respectslike the engine just described except that one maybe calledright-handed and the other left-handed, this second engine operating ona second crank on the crank-shaft D set about quartering to the firstcrank: a, b and c, dotted lines indicating the planes of cross-sectionviews in the drawings: (1, (Fig. 4) projections from the inner faces ofthe crank-housings to a point of juncture unifying the twocrank-housings in the case of twin engines: 6, similar projections fromthe inner faces of the beam-housings L to unify the two beam-housings:f, a rocker on the inner trunnion of beam P to serve, if desired, as ameans for operating an air pump or feed pump setting upon the extension6 below the rocker: g, a diagonal stretcher-rod or tie extending fromthe pillow-block O diagonally downward to the inner one of thepillowblocks 0: 72, (Fig. 6) a trough formed in the upper portion of thebeam-housing L between the two upward extensions thereof which carry thepillow-blocks, the inner wall of this trough clearing the periphery ofthe cylinderhead of the pump at the beam end of the pump: 7', the flangepreviously referred to as projecting upwardly from the crank-housing toengage the forward end of the highpressure cylinder, this attachingflange being formed with the upward projection of the crank-housingwhich carries the pillowblock 0.

Piston K operates the pump plunger and oscillates the beam and turns thecrank-shaft in an obvious manner. The high-pressure piston, actingthrough rods XV, also oscillates the beam, and the reciprocations of thetwo pistons are in opposite directions appropriate to this type ofcompound engine. All of the working strains applied to and through thebeam 0 are centrally or symmetrically applied, there thus being notwisting strains upon the beam,and the thrusts upon the twobeam-trunnions are equal. The crank-housing and beam-housing restdirectly upon the foundation and support the working parts of the engineentirely independent of the steamcylinder and pump-barrel, thepump-barrel acting merely as a bracing stretcher between thecrank-housing and the beam-housing. The tie 9 introduces strength in thedirect line of strain between the crank-bearing and the beam-bearing.Remove the high-pressure cylinder S, with its connect-ions W, and thestructure, consisting of one of the twins only, becomes a simple engineinstead of a compound. Remove the low-pressure cylinder F, retaining thecylinder S, and the structure becomes a simple engine. Remove thepump-barrel G, and the structure becomes a compound motive power engine,or a simple one in case one of the steam cylinders is removed. The partsare accessible to apeculiar degree, for inspection and repair, owinglargely to the fact that neither of the steamcylinders or thepump-barrel engage the foundations direct or themselves form thefoundations for the other parts. By disconnecting the rods and linkswhich engage'the beam, the beam may be turned horizontally and thenpiston K may be removed and the front cylinder-head of the pump may beunbolted and the piston-rod II and the plunger J may be withdrawnendwise from the machine. The steam cylinder or the pump-barrel, or thecrank-shaft, or the beam may be readily removed separately and withoutgeneral disturbance of other heavy parts of the machine.

When twin engines are employed, as in the exemplification, the peculiardisposition of the pump-barrels between the housings which rest upon thefoundation provide excellent facility for arranging the waterconnections which may be coupled as desired across the machine from onetwin to the other without interfering with the main parts of themachine.

I claim as my invention- 1. In a steam engine, the combination,substantially as set forth, of a vertically disposed crank-housingstanding on a foundation and having a pillow-block in its upper part, acrank-shaft j on rnaled in such pillow-block, a beam-housing resting onthe foundation apart from the crank-housing and having a crosshead-guideand apillow-block, a crosshead in said guide, a removable tie orstretcher between said crank-housing and beam-housing, a beam mounted insaid beam-housing, a connection from the upper end of said beam to thecrank, a steam-cylinder secured against the face of said crankhousingfarthest distant from said beam-housing, a piston-rod ex tending fromthe piston of said cylinder through said crank-housing to saidcrosshead-guide, and links connecting said crosshead with the lower endof said beam said piston-rod being disposed at right angles to saidcrank-shaft and in the vertical plane of its crank and a distance belowsaid shaft in excess of the length of said crank.

2. In a steam engine, the combination, substantially as set forth, of avertically disposed crank-housing standing on a foundation and having apillow-block and crosshead-guidein its upper part, a crosshead in saidguide, a crank-shaft journaled in such pillow-block, a beam-housingresting on the foundation apart from the crank-housing and having apillowblock, a removable tie or stretcher between said crank-housing andbeam housing, a beam mounted in said beam-housing, a connection from theupper end of said beam to the crank, a steam-cylinder secured againstthe face of said' crank-housing farthest distant from saidbeam-housing,apiston-rod extendingfrom the piston of said cylinder tosaid crosshead, and rods connecting said crosshead with the upper end ofsaid beam said piston-rod being disposed at rightangles to saidcrank-shaft and in the vertical plane of its crank anda distance belowsaid shaft in excess of the length of said crank.

3. In a steam engine, the combination, substantially as set forth, of avertically disposed crank-housing standing on a foundation and having apillow-block in its upper part, a crank-shaft journaled in suchpillow-block, a beam-housing resting on the foundation apart from thecrank housing and having a crosshead-guide and a pillow-block, acrossheadin said guide, a removable pump secured to and between saidcrank-housing and bea1n-housing, a beam mounted in said beam-housing, aconnection from the upper end of said beam to the crank, asteam-cylinder secured against the face of said crank-housing farthestdistant from said beam housing, a piston-rod extending from saidcylinder through said crank-housing and pump to said crossheadguide, andlinks connecting said crosshead with the lower end of said beam.

4. In a steam engine, the combination, substantially as set forth, of averticallydisposed crank-housing standing on a foundation and having apillow-block and crosshead-guide in its upper part, a crosshead in saidguide, a crank-shaft journaled in such pillow-block, a beam-housingresting on the foundation apart from the crank-housing and having apillowblock, a removable pump secured to and between said crank-housingand beam-housing, a beam mounted in said beam-housing, a connection fromthe upper end of said beam to the crank, a steam-cylinder securedagainst the face of said crank-housing farthest distant from saidbeam-housing, a piston-rod extending from the piston of said cylinder tosaid crosshead, and rods crosshead with the upper end of said beam.

5. In a steam engine, the combination, substantially as set forth, of avertically-disposed crank-housing standing on a foundation and having apillow-block and crosshead-guide in its upper part, a crank-shaftjournaled in such pillow-block, a beam-housing resting on the foundationapart from thecrank-housing and having a crosshead-guide and apillowblock, a removable pump secured to and between said crank-housingand beam-housing, a beam mounted in said beam-housing, a connection fromthe upper end of said beam to the crank, a steam-cylinder securedagainst the face of said vertically-disposed crankhousingfarthestdistant from said beam-housing, a piston-rod extending from thepiston of said cylinder through said crank-housing and pump to acrosshead in the crossheadguide of the beam-housing, links connectingsaid crosshead with the lower end of said beam, a second cylindersecured to said crankhousing above the first cylinder,a second crossheadon the piston-rod of said second cylinder and working in thecrosshead-guide of the crank-housing, and rods connecting the upper endof said beam with said second connecting saidcrosshead said piston-rodbeing disposed at right angles to said crankshaft and in the verticalplane of its crank and a distance below said shaft in excess of thelength of said crank.

6. In a steam engine, the combination,substantially as set forth, of apair of vertically disposed crank-housings standing on a foundation sideby side and secured together at their bases and provided each with apillowblock in its upper part, a crank-shaft journaled in saidpillow-blocks and carryinga flywheel between the pillow-block, abeam-housing in line with and forward of each crankhousing and providedwith a pillow-block, a beam mounted in each of said beam-housings,removable ties or stretchers between said beam-housings andcrank-housings, a steam cylinder secured against the outer face ofeachof said crank-housings, and connections from said beams to the cranksand to the pistons of the cylinders the axes of being located in thevertical planes, respectively, of the cranks of said crankshaft and saidsteam cylinders,

below said shaft a distance in excess of the length of the cranks.

7. In a steam engine, the combination, substantially as set forth, ofavertically disposed crank-housing standing on a foundation and having apillow-block in its upper part, a crankshaft journaled in suchpillow-block, a steam-cylinder secured against one face of saidcrank-housing, a pump secured against the opposite face of saidcrank-housing, a beam-housing resting on the foundation and secured tothe opposite end of the pump and having its upper portion trough-shapedand having a pillow-block in the upper portion of each side wall of thetrough, a beam mounted in the pillow-blocks of said beam-housin g, andconnections from said beam to said crank and pump and steam cylinder.

-8. In a steam engine, the combination, substantially as set forth, of avertically disposed crank-housing standing on a foundation and having apillow-block at its upper part, a steam cylinder secured against oneface of said crank-housing, a beam-housing disposed forward of thecrank-housing and having a pillow-block, a removable tie or stretcherbetween said beam-housing and crank-housing,

a beam mounted in said beam housing, a crank-shaft mounted in thepillow-block of said crank-housing, a connecting-rod engaging said crankwith the wrist in said beam in the central vertical plane of the beam, apiston-rod and cross-head for said steam-cylinder, and connecting-rodsor links engaging said crosshead and beam at each side of said firstmentioned connecting-rod said pistonrod being disposed in the verticalplane of the crank of said crank-shaft and below it a distance in excessof the length of said crank.

9. In a steam engine, the combination, substantially as set forth, of acrank-housing standing on a foundation and having a pi1-.

low-block in its upper part, a steam-cylinder secured against one faceof said crank-housblocks to the other the axis of said cylinder ing, acrank-shaft mounted in said pillowbeing disposed in the vertical planeof the IO block, a beam-housing disposed forward of crank of saidcrank-shaft and below it a disseid crank-housing and havingapillow-blocktance in excess of the length of said crank.

5 in its upper portion, a removable stretcher or JAMES R. MAXWELL.

tie connecting said beam-housing and crank- Vitnesses: housing below thelevel of said pillow-blocks, JAMES 7. SEE,

and a tie extending from one of said pillow- PERLEY. P. SHEEHAN.

